Fix lint check name (#1502)

niliness -> nilness

Author: JacobOaks

.golangci.yml

@@ -25,7 +25,7 @@ linters-settings:
   govet:
     # These govet checks are disabled by default, but they're useful.
     enable:
-      - niliness
+      - nilness
       - reflectvaluecompare
       - sortslice
       - unusedwrite